7 
324 MONOCOTYLEDONEÆ. TRACHYPOGON, 
teretes, farcti. Vaginæ teretes, arctæ, internodiis plerumque longiores, 
nodis plus minusve pubescentibus v. barbatis. Ligula longitudine 
varia, firmula. Laminæ e basi æquilata v. angustata lineares, longis- 
sime acuminatæ, vernatione convoluta, adultæ convolutæ v. planæ, 
glaucæ, rigidæ, costa media basi crassiuscula usque crassissima, plu- 
rinervi, supra latiuscule albostriata munita, nervis primariis paucis v. 
pluribus prominulis, secundariis singulis vix prominulis percursa. 
Racemi 1—5, basi e vagina summa breviter exserti raro vaginati, 
lineares, compressi, graciles v. subrobusti, erecti v. plus minus cur- 
vati, rhachi tenui teretiuscula plerumque glabra, artieulis spieula 
!/,— duplo brevioribus. Spiculæ varietatum omnium quantopere habitu 
diversarum fere ezedem, oblong& v. lineari-oblong& ; mascule 5—8 mm. 
long®, sine callo, pallide virides v. sordide violaceo-suffuss : gluma 
I» apice rotundata v. obtusa, (raro obtuse dentata), ad flexuras 
marginales plus minus albo-marginata et serrulato-scabra, dorso 
pubescens, raro glabrescens, plerumque 9 (7—11)-nervis, nervis paullo 
infra apicem desinentibus, anastomosantibus ; II^» acuta, glabra ; IV* 
paullo brevior, lineari-lanceolata, 3-nervis, superne ciliata. Antherz 
iis spieule 8 majores. Spiculæ hermaphrodit® pedicello 2—3 mm. 
longo piloso post delapsam spiculam cicatricem laneeolatam respectu 
pedicelli valde.obliquam exhibente fult®, cum callo acuto, barbato 
masculis paullo (1—2 mm.) majores: gluma I" dorso magis quam in 
Sp. d pilosa, 7—9-nervis ; II^ linearis, dorso hirtula; IIE paullo bre- 
vior, oblonga, truncata, ciliata, IV* basi trinervis ; arista 2,5—12 em. 
longa, pallida (concolor), columná supra medium v. in '/, superiore 
subflexuosa v. recta, circumcirca patenti-pilosa, pilis albis sursum 
decrescentibus, raro breviter hirtula, subula inferne breviter pilosula, 
superne scabra, raro ad apieem usque pilosa. De mira hujus speciei 
variabilitate non solum in speciminibus diversarum stationum sed 
etiam ejusdem loei, immo in partibus ejusdem ezespitis manifesta efr. 
. Fl. bras. E c. 
‚A. Racemi plerumque solitarii, intermixtis raro racemis binis, rarissime ternis. 
a. Arist: subula inferne breviter erecto-pilosula, superne scabra, v. tota scabra. 
Var. a,canescens Hack. l. c. ; laminis omnibus filiformibus v. junceis 
sericeo-villosis, ligula obtusa 2—4 mm. longa. — Tr. canescens Nees! 
Agrost. brasil. p. 343; Andropogon canescens Kunth. Enum. 1, 
p. 487. — Totus sericeo-villosus, prsesertim folia innovationum. 
